Sold out
Dorman - First Stop Brake Master Cylinder P/N:M105801
$123.99
When a master cylinder begins bypassing internally and the brake pedal slowly sinks toward the floor under steady pressure, the Dorman - First Stop Brake Master Cylinder M105801 gives you a direct-fit replacement for the listed applications. It drops in for the 1982 Buick Regal and Riviera; 1982 Chevrolet El Camino, Malibu and Monte Carlo; 1982-1988 Chevrolet S10; 1983-1988 Chevrolet S10 Blazer; 1982 GMC Caballero; 1982-1988 GMC S15; 1983-1988 GMC S15 Jimmy; 1982 Oldsmobile Cutlass Calais, Cutlass Cruiser and Cutlass Supreme; and 1982 Pontiac Bonneville and Grand Prix. As the master cylinder, it converts the force from the brake pedal into the hydraulic pressure that feeds the brake circuits.
- Core function: translates pedal input into hydraulic line pressure for the braking system.
- Direct-fit replacement: serves as a direct-fit replacement for the listed applications.
- Targeted repair: if a worn or internally leaking master cylinder is the cause of a sinking or spongy pedal, this replaces it.
If a failing master cylinder is behind your low or fading pedal, this unit addresses that specific component. Diagnose the cause before replacing, since pedal symptoms can also stem from air in the lines, hoses, or wheel-end hydraulics.
Frequently Asked Questions
What does this brake master cylinder do?
It converts the force you apply at the brake pedal into hydraulic pressure that is sent to the brake circuits to operate the brakes.
Which vehicles does the M105801 fit?
It is a direct-fit replacement for the listed applications, including the 1982-1988 Chevrolet S10, 1982-1988 GMC S15, and several 1982 GM cars. See the Buyer's Guide tab for the full list.
What are signs my master cylinder may need replacing?
Common signs include a pedal that slowly sinks toward the floor under steady pressure, a low or spongy pedal, or brake fluid leaking at the cylinder. Have the cause diagnosed first.
Should I bench-bleed it before installing?
Master cylinders are commonly bench-bled before installation to remove trapped air. Follow the bleeding steps in your vehicle's service information.
Does replacing this fix a sinking pedal?
If a worn or internally leaking master cylinder is the cause, this replaces it. A sinking pedal can also come from air in the lines or other hydraulic parts, so diagnose the cause first.
Write a Review
Dorman
Dorman - First Stop Brake Master Cylinder P/N:M105801
Related Products
Add to Cart
The item has been added
Add to Cart
The item has been added